Company DescriptionCrowdApps Technologies is a Web & Mobile Apps development company based in Gurugram. We provide customized software solutions to businesses, focusing on delivering high-quality, secure, scalable, and innovative digital products. Our services include Web Development, Mobile Application Development, Digital Marketing, and Cyber Security. We have also excelled in developing Healthcare/Medical applications. At CrowdApps, we strive for perfection and aim to build life-long professional relationships with our clients.Role DescriptionThis is a full-time Back End Developer role at CrowdApps Technologies. The Back End Developer will be responsible for day-to-day tasks related to back-end web development and software development. The role is located in Gurugram, with flexibility for some remote work.As a Backend Developer (Node.js) you will be responsible for developing, testing, and maintaining software applications. You will work closely with other developers, product owners to design and develop high-quality software solutions that meet the needs of our customers.Must-Have SkillsORM (Drizzle, Prisma) + Understanding of SQL and queriesExpert Knowledge in Postgres TypescriptImmutability vs mutabilityAWS LambdaSNS (bonus)Basic understanding of networks (private + public)Security groupsAWS S3 + CloudfrontExpress.js (in typescript)Passport auth - RSA Push Notifications - firebaseKey Responsibilities:5+ years' experience as a Senior Node.js Developer with a strong portfolio of successful enterprise level projects.Working knowledge of NodeJS on ExpressJS frameworks with strong proficiency with JavaScript and TypeScript. Must have worked on AWS.Design and develop APIs and scalable microservices for the cloud platform.Understanding of Modularization and knowledge of WebSocket, Webhooks and API Management. Knowledge of working with NoSQL/SQL/MongoDB.Solid understanding of web technologies JSON, HTTP, Restful APIs. Understanding the nature of asynchronous programming and its quirks and workarounds. Knowledge of User authentication and authorization between multiple systems, servers, and environments. Understanding of fundamental design principles behind a scalable application. Familiarity with Unit testing and debugging. Proficient understanding of versioning tools and repositories like Git & Gitlab.Understanding of CI/CD pipeline and implementation. A team player with excellent communication skills.Location- Remote,Delhi NCR,Bengaluru,Chennai,Pune,Kolkata,Ahmedabad, Mumbai,Hyderabad